Differences

This shows you the differences between two versions of the page.

--- regression [2019/09/11 18:55] – hkimscil
+++ regression [2019/12/06 08:25] – hkimscil
@@ Line 33: / Line 33: @@
 간혹, 다른 교재를 보면,
- $b = r * \displaystyle \frac{s_{Y}}{s_{X}}$
+$$b = r * \displaystyle \frac{s_{Y}}{s_{X}} $$
 와 같이 나타나는데 이 둘은 같은 의미를 갖는다.
@@ Line 39: / Line 39: @@
 __동일한 공식 설명__:
- $ r = \displaystyle \frac{SP}{\sqrt{SS_X SS_Y}}\text{, threfore } $
+\begin{eqnarray*}
+r & = & \displaystyle \frac{SP}{\sqrt{SS_X SS_Y}}\text{,}\quad\text{therefore} \\
- $ SP = r * \displaystyle \sqrt{SS_X SS_Y} $ 그리고
+SP & = & r * \displaystyle \sqrt{SS_X SS_Y} \quad \text{and} \\
+\\
- $ b = \displaystyle \frac{SP}{SS_X} $ 따라서
+b & = & \displaystyle \frac{SP}{SS_X} \\
+& = & \displaystyle \frac{r * \sqrt{SS_X SS_Y}}{SS_X}  \\
- $ = \displaystyle \frac{r * \sqrt{SS_X SS_Y}}{SS_X} = r * \frac{\sqrt{SS_Y}}{\sqrt{SS_X}} $ 따라서
+& = & r * \frac{\sqrt{SS_Y}}{\sqrt{SS_X}} \\
+& = & r * \displaystyle \frac{s_Y}{s_X}
- $ = r * \displaystyle \frac{s_Y}{s_X} $
+\end{eqnarray*}
 </WRAP>